USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 429.5 km
Apogee: 523.1 km
Inclination: 94.1 °
Period: 94.0 minutes
Semi major axis: 6847 km
RCS: 0.1768 m² (medium)
Launch date: April 5, 1990
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

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1 20547U 90028B   24116.86810091  .00009039  00000-0  27063-3 0  9996
2 20547  94.1070  65.6029 0068327 239.9880 119.4578 15.32239934881603

Source of the keplerian elements: AFSPC